<template>
  <el-container>
    <el-header>
      <div>
        <img src="../assets/heima.png"/>
        <span>后台管理系统</span>
      </div>
      <el-button type="info" @click="lonut">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="iscollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleSpole">|||</div>
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409bff"
          unique-opened
          :collapse="iscollapse"
          :collapse-transition="false"
          router
          :default-active='activePath'>
          <el-submenu :index="item.id + ''" v-for="item in menulists" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{ item.authName }}</span>
            </template>
            <el-menu-item :index="'/' + subitem.path" v-for="subitem in item.children" :key="subitem.id"
                          @click="Saveclick('/' + subitem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{ subitem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  name: 'Home',
  data () {
    return {
      menulists: [],
      iconsObj: {
        125: 'iconfont icon-users',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      iscollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    lonut () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulists = res.data
    },
    toggleSpole () {
      this.iscollapse = !this.iscollapse
    },
    Saveclick (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style scoped lang="less">
.el-container {
  height: 100%;
}

.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 10px;
  align-items: center;
  color: white;
  font-size: 20px;

  > div {
    display: flex;
    align-items: center;

    span {
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;

  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: white;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
